CN108566609B

CN108566609B - Sound producing device

Info

Publication number: CN108566609B
Application number: CN201810825120.3A
Authority: CN
Inventors: 肖斌峰; 岳帅坤
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2018-07-25
Filing date: 2018-07-25
Publication date: 2022-04-22
Anticipated expiration: 2038-07-25
Also published as: CN108566609A

Abstract

The invention discloses a sound production device, which comprises a magnetic circuit system, a voice coil, a vibrating diaphragm connected with the voice coil, and a vibrating diaphragm fixing frame connected with the vibrating diaphragm, wherein the voice coil is connected with the voice coil; the magnetic circuit system has a magnetic gap; the voice coil, the vibrating diaphragm and the vibrating diaphragm fixing frame are connected into a vibrating module, the vibrating module is integrally detachably mounted on the magnetic circuit system, and at least part of the voice coil is inserted into the magnetic gap. The technical scheme of the invention can improve the convenience of assembling and maintaining the sound generating device.

Description

Sound producing device

Technical Field

The invention relates to the technical field of generating devices, in particular to a sound generating device.

Background

At present, in the process of producing and assembling a sound generating device (such as a loudspeaker), a vibration system of the sound generating device generally needs to be positioned through a series of work to complete assembly, and once a poor vibrating diaphragm is assembled, the repair process is complex and difficult to operate.

Disclosure of Invention

The invention mainly aims to provide a sound generating device, aiming at improving the convenience of the sound generating device in assembly and maintenance.

In order to achieve the purpose, the sound production device provided by the invention comprises a magnetic circuit system, a voice coil, a vibrating diaphragm connected with the voice coil, and a vibrating diaphragm fixing frame connected with the vibrating diaphragm;

the magnetic circuit system has a magnetic gap;

the voice coil, the vibrating diaphragm and the vibrating diaphragm fixing frame are connected into a vibrating module, the vibrating module is integrally detachably mounted on the magnetic circuit system, and at least part of the voice coil is inserted into the magnetic gap.

Optionally, the vibrating diaphragm mount includes the mount body that is both ends open-ended tube-shape, and fixed clamping ring, the outward flange of vibrating diaphragm is fixed by the centre gripping the mount body with between the fixed clamping ring.

Optionally, the inward flange of mount body one terminal surface is equipped with the installation step, the outward flange overlap joint of vibrating diaphragm in the installation step, fixed clamping ring tight fit card is gone into the installation step, in order to restrict the vibrating diaphragm breaks away from the installation step.

Optionally, the fixed compression ring is provided as a copper ring.

Optionally, the sound generating device further includes two connection terminals, and the two leads of the voice coil are connected in a one-to-one correspondence with the two connection terminals.

Optionally, a terminal groove is formed on the outer circumferential surface of the fixing frame body corresponding to each connection terminal.

Optionally, the magnetic circuit system comprises a magnetic yoke, and a central magnet and an outer ring magnet arranged on the magnetic yoke, wherein the outer ring magnet is arranged on the central magnet in a spacing way so as to form the magnetic gap between the outer ring magnet and the central magnet.

Optionally, the magnetic yoke is provided with a plurality of damping holes communicated with the magnetic gaps, and the damping holes are provided with damping mesh cloth.

Optionally, the fixing frame body is tightly fitted around the outer circumferential surface of the outer ring magnet.

Optionally, the number of the vibration modules is at least two, the vibrating diaphragms in the two vibration modules are made of different materials, and the vibration module is selected to be mounted on the magnetic circuit system.

In the technical scheme of the invention, as the vibration module can be integrally assembled and disassembled, on one hand, the assembly and the maintenance of the sound generating device can be facilitated, and particularly, on a production line, when a product is detected to have poor tone quality or cannot generate sound due to damage of the vibration film, the vibration module of the product can be disassembled, and the vibration module with the good vibration film is replaced, so that the product can be repaired, and the repair is really convenient; on the other hand, the vibration module of the vibrating diaphragms with different materials can be conveniently replaced by development and test personnel to test the sounding devices with different timbres.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a sound generating device according to an embodiment of the present invention;

FIG. 2 is an exploded view of the sound generator of FIG. 1;

fig. 3 is an enlarged schematic view of a point a in fig. 2.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a sound production device.

Referring to fig. 1 and 2, in an embodiment of the present invention, the sound generating apparatus includes a magnetic circuit 3, a voice coil 21, a diaphragm 22 connected to the voice coil 21, and a diaphragm fixing frame 23 connected to the diaphragm 22;

the magnetic circuit system 3 has a magnetic gap 30;

the voice coil 21, the diaphragm 22 and the diaphragm holder 23 are connected to form a vibration module 2, the vibration module 2 is integrally detachably mounted to the magnetic circuit system 3, and the voice coil 21 is at least partially inserted into the magnetic gap 30.

In the technical scheme of the invention, as the vibration module 2 can be integrally disassembled, on one hand, the assembly and maintenance of the sound generating device can be facilitated, and particularly, on a production line, when a product is detected to have poor tone quality or cannot generate sound due to the damage of the vibration diaphragm 22, the vibration module 2 of the product can be disassembled, and the vibration module 2 with the good vibration diaphragm 22 is replaced, so that the product can be repaired, and the repair is really convenient; on the other hand, development and test personnel can replace the vibration module 2 with the vibrating diaphragms 22 made of different materials conveniently to test the sounding devices with different timbres.

In this embodiment, preferably, the vibration module 2 may be equipped with at least two vibration modules 2, and the material of the vibration membranes 22 in the two vibration modules 2 is different, so that one vibration module 2 can be mounted to the magnetic circuit system 3, thereby facilitating the testing of the sound generating devices with different timbres. It should be understood that, in the present embodiment, the plurality of vibration modules 2 of the same sound generating apparatus are identical in external shape and size, and only the material of the diaphragms 22 is different.

Further, the diaphragm holder 23 includes a cylindrical holder body 231 having openings at both ends, and a fixing pressing ring 232, and the outer edge of the diaphragm 22 is clamped and fixed between the holder body 231 and the fixing pressing ring 232. However, the design is not limited thereto, and in other embodiments, the fixing ring 232 may not be designed, and the outer edge of the diaphragm 22 and the fixing frame body 231 may be bonded and fixed. In this embodiment, optionally, the fixed pressing ring 232 is configured as a metal ring, and the metal ring has good rigidity, which is beneficial to stable and reliable installation of the structure; specifically, the fixed pressing ring 232 may be provided as a copper ring, and the copper material is not easily corroded.

Referring to fig. 3, further, an inner edge of one end surface of the fixing frame body 231 is provided with an installation step 231a, an outer edge of the diaphragm 22 is lapped on the installation step 231a, and the fixing press ring 232 is tightly fitted and clamped into the installation step 231a to limit the diaphragm 22 from being separated from the installation step 231 a. It can be understood that the addition of the mounting step 231a is beneficial to positioning and mounting the diaphragm 22, and is also beneficial to fixing the fixing press ring 232 and the fixing frame body 231. However, the design is not limited thereto, and in other embodiments, the fixing ring 232 may also be connected to the fixing frame body 231 by, but not limited to, a snap structure.

Further, the sound generating apparatus further includes two connection terminals 24, and two lead wires of the voice coil 21 are connected to the two connection terminals 24 in a one-to-one correspondence, so that the electric connection of the vibration module 2 and the control circuit can be facilitated. In this embodiment, it is preferable that the outer peripheral surface of the fixing frame body 231 is provided with a terminal groove 231b corresponding to each connection terminal 24 to accommodate and mount the connection terminal 24, so as to prevent the connection terminal 24 from scattering. In this embodiment, specifically, the terminal groove 231b penetrates the mounting step 231a to facilitate the electrical connection between the connection terminal 24 and the lead wire of the voice coil 21, and reduce the probability that the lead wire of the voice coil 21 is broken by the fixing pressing ring 232.

Referring to fig. 2, further, the magnetic circuit system 3 includes a magnetic yoke 31, and a central magnet 32 and an outer ring magnet 33 disposed on the magnetic yoke 31, wherein the outer ring magnet 33 is spaced from the central magnet 32 to form the magnetic gap 30 between the outer ring magnet 33 and the central magnet 32. Without loss of generality, in the present embodiment, the magnetic circuit system 3 further includes a central magnetic conductive plate 34 and an outer ring magnetic conductive plate 35, where the central magnetic conductive plate 34 is disposed on the central magnet 32, and the outer ring magnetic conductive plate 35 is disposed on the outer ring magnet 33. However, the design is not limited thereto, and in other embodiments, the magnetic circuit system 3 may have other structures, such as:

the magnetic conducting yoke can be arranged in a bowl shape, namely, the magnetic conducting yoke comprises a bottom wall and an annular side wall, at the moment, only a central magnet needs to be arranged in the center of the bottom wall of the magnetic conducting yoke, and the magnetic gap is formed by a gap between the side wall of the magnetic conducting yoke and the central magnet; or

The magnetic yoke can comprise a bottom wall and two opposite side walls, at the moment, a central magnet can be arranged in the center of the bottom wall of the magnetic yoke, and one side magnet is respectively arranged on the two opposite side edges of the magnetic yoke, which are not provided with the side walls; in this case, the center magnet may be provided at the center of the bottom wall of the magnetic yoke, and the four side magnets surrounding the center magnet may be provided at the bottom wall of the magnetic yoke.

In addition, in the present embodiment, the outer ring magnet 33 is provided in a ring shape; however, the design is not limited thereto, and in other embodiments, the outer ring magnet 33 may be disposed in a square ring shape.

Optionally, in this embodiment, the fixing frame body 231 is tightly fitted on the outer peripheral surface of the outer ring magnet 33, so as to conveniently connect the vibration module 2 and the magnetic circuit system 3. However, the design is not limited thereto, and in other embodiments, the fixing frame body 231 may be further installed and fixed with the magnetic circuit system 3 through a snap structure, a screw locking structure, and the like.

In this embodiment, further, a plurality of damping holes 311 linked with the magnetic gap 30 are disposed on the magnetic yoke 31, and a damping sheet 312 is disposed on the damping hole 311, so as to absorb sound through the damping sheet 312, thereby increasing system damping of the product, reducing displacement of the product, further improving sound fidelity effect, and improving acoustic performance of the product. In this embodiment, the damping sheet 312 may be made of, but not limited to, damping mesh, damping foam, and other sound-absorbing materials.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A sound production device is characterized by comprising a magnetic circuit system, a voice coil, a vibrating diaphragm connected with the voice coil, and a vibrating diaphragm fixing frame connected with the vibrating diaphragm;

the magnetic circuit system has a magnetic gap;

the voice coil, the vibrating diaphragm and the vibrating diaphragm fixing frame are connected to form a vibrating module, the vibrating diaphragm fixing frame is detachably mounted on the magnetic circuit system, so that the vibrating module is integrally detachably mounted on the magnetic circuit system, and at least part of the voice coil is inserted into the magnetic gap;

the vibration modules are at least two, the vibrating diaphragms in the two vibration modules are made of different materials, and one vibration module is selected to be installed on the magnetic circuit system;

the vibrating diaphragm fixing frame comprises a cylindrical fixing frame body with openings at two ends, and an installation step is arranged on the inner edge of one end face of the fixing frame body;

the sound generating device also comprises two connecting terminals, and two leads of the voice coil are correspondingly connected with the two connecting terminals one by one;

the outer peripheral surface of the fixing frame body is provided with a terminal groove corresponding to each connecting terminal, and the terminal groove penetrates through the mounting step to be electrically connected with the lead of the voice coil; the outer edge of the vibrating diaphragm is lapped on the mounting step;

the magnetic circuit system comprises a magnetic yoke, a central magnet and an outer ring magnet, wherein the central magnet and the outer ring magnet are arranged on the magnetic yoke, and the outer ring magnet is arranged on the central magnet in a spacing ring mode so as to form the magnetic gap between the outer ring magnet and the central magnet;

the fixing frame body is tightly sleeved on the peripheral surface of the outer ring magnet.

2. The sound-emitting device according to claim 1, wherein the diaphragm holder further comprises a fixing press ring, and the outer edge of the diaphragm is clamped and fixed between the holder body and the fixing press ring.

3. The sound generating apparatus of claim 2, wherein the retaining ring is snapped into the mounting step to limit the diaphragm from disengaging from the mounting step.

4. A sound-generating device as claimed in claim 3, characterized in that the retaining ring is provided as a copper ring.

5. The sound generating apparatus as claimed in claim 1, wherein the yoke has a plurality of damping holes communicating with the magnetic gaps, and the damping holes have a damping mesh cloth thereon.